/******************************************************************************
 * Copyright (C) 671643387@qq.com
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *****************************************************************************/

#include "NodeCpp/AtExit.h"
#include <cassert>
#include "NodeCpp/LockGuard.h"

namespace NodeCpp
{
    AtExit* AtExit::Instance_ = NULL;

    AtExit::AtExit(void)
        : DestroyerStack_()
        , DestroyerStackLock_()
    {
        NODECPP_ASSERT(Instance_ == NULL);
        Instance_ = this;
    }

    AtExit::~AtExit(void)
    {
        NODECPP_LOCK_MUTEX(_Guard, DestroyerStackLock_);
        while (!DestroyerStack_.empty())
        {
            DestroyerStack_.top()();
            DestroyerStack_.pop();
        }
        Instance_ = NULL;
    }

    void AtExit::Push(Destroyer _Destroyer)
    {
        NODECPP_ASSERT(Instance_ != NULL);
        NODECPP_LOCK_MUTEX(_Guard, Instance_->DestroyerStackLock_);
        Instance_->DestroyerStack_.push(_Destroyer);
    }
}